Vacuum toilet bowl



FIG. 1 is a front view of a vacuum toilet bowl, showing our new design;

FIG. 2 is a rear view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a right side view thereof;

FIG. 5 is a top view thereof;

FIG. 6 is a bottom view thereof; and,

FIG. 7 is a perspective view thereof.

Any shading and cross-hatching are not features of the design but are utilized to illustrate the surface contours of the sound amplifier in the drawings.

The broken lines are for the purpose of illustrating only and forms no part of the claimed design. 

CLAIM The ornamental design for a vacuum toilet bowl, as shown and described. 